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However, in this case "val" is a u32 and the function returns signed longs so negative error codes from kstrtou32() are returned as high positive values. Store the error code in an int instead. Fixes: d20ee8e2dbd6 ("PCI: dwc: Add debugfs based Error Injection support for DWC") Signed-off-by: Dan Carpenter --- drivers/pci/controller/dwc/pcie-designware-debugfs.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-designware-debugfs.c b/drivers/pci/controller/dwc/pcie-designware-debugfs.c index 945f8f9b6d0e..a6737bdc46ac 100644 --- a/drivers/pci/controller/dwc/pcie-designware-debugfs.c +++ b/drivers/pci/controller/dwc/pcie-designware-debugfs.c @@ -305,6 +305,7 @@ static ssize_t err_inj_write(struct file *file, const char __user *buf, u32 val, counter, vc_num, err_group, type_mask; int val_diff = 0; char *kern_buf; + int ret; err_group = err_inj_list[pdata->idx].err_inj_group; type_mask = err_inj_type_mask[err_group]; @@ -326,10 +327,10 @@ static ssize_t err_inj_write(struct file *file, const char __user *buf, return -EINVAL; } } else { - val = kstrtou32(kern_buf, 0, &counter); - if (val) { + ret = kstrtou32(kern_buf, 0, &counter); + if (ret) { kfree(kern_buf); - return val; + return ret; } } -- 2.53.0